EP 1236894 A1 20020904 - Electromagnetically operated pump
Title (en)
Electromagnetically operated pump
Title (de)
Elektromagnetische Pumpe
Title (fr)
Pompe électromagnetique
Publication
Application
Priority
IT MI20010419 A 20010301
Abstract (en)
An electromagnetically operated pump, to feed two-stroke internal-combustion engines with precise and controlled amounts of oil, comprises in a casing (1): a cylinder (2); a piston element (3) with a through pipe (4), axially movable in said cylinder (2); an electromagnetic coil (10) external to the cylinder (2), to control the movements of the piston element (3) against the action of spring means (11); a pumping and metering chamber (7) for the oil to be fed, at one end (9) of the cylinder (2); and valve means (12, 13) housed in said casing (1) close to said end (9), one of said means (12) cooperating with said piston element (3). According to the invention, two opposite abutments (14, 15) are formed on the piston element (3), said abutments (14, 15) cooperating with corresponding abutments (16, 17) of an element apt to stop the cylinder (2) into the casing (1). In said pump, the stroke (C) of the piston element (3) into the cylinder (2) is limited exclusively by the cooperation between said abutments (14, 15 and 16, 17) which thereby determine the metering of the oil to be fed.
IPC 1-7
IPC 8 full level
F01M 1/02 (2006.01); F01M 3/02 (2006.01); F04B 17/04 (2006.01); F02B 75/02 (2006.01)
CPC (source: EP)
F01M 1/02 (2013.01); F01M 3/02 (2013.01); F04B 17/046 (2013.01); F02B 2075/025 (2013.01)
Citation (search report)
- [A] EP 0953764 A1 19991103 - MAGNETI MARELLI SPA [IT]
- [A] EP 1001167 A2 20000517 - MIKUNI ADEC CORP [JP]
Designated contracting state (EPC)
DE ES FR IT
DOCDB simple family (publication)
EP 1236894 A1 20020904; EP 1236894 B1 20060628; DE 60212742 D1 20060810; DE 60212742 T2 20070628; ES 2263699 T3 20061216; IT MI20010419 A1 20020901
DOCDB simple family (application)
EP 02004696 A 20020228; DE 60212742 T 20020228; ES 02004696 T 20020228; IT MI20010419 A 20010301